﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CExample02_Sharp
{
    class Rectangle
    {
        int width, height;
        public Rectangle(int a, int b)
        {
            width = a;
            height = b;
        }
        public int area()
        {
            return (width * height);
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            Rectangle recta = new Rectangle(3,4);
            Rectangle rectb = new Rectangle(5,6);
            Console.WriteLine("recta:" + recta.area());
            Console.WriteLine("rectb:" + rectb.area());
        }
    }
}
